const date = new Date()
const years = []
const months = []
const days = []
for(let i = 1990; i<=date.getFullYear(); i++){
    years.push(i)
}
for (let i =1; i<=12; i++){
    months.push(i)
}
for(let i =1; i<=31; i++){
    days.push(i)
}

Page({
    data: {
        years: years,
        year: date.getFullYear(),
        months: months,
        month: 2,
        days: days,
        day:2,
        value: [0,1,1]
    },
    bindChange: function (e) {
        const val = e.detail.value;
        console.log(val);
        this.setData({
            year: this.data.years[val[0]],
            month: this.data.months[val[1]],
            day:this.data.days[val[2]]
        })
    }
})